Earth Systems Connections

Grade Level

4

Duration

90 minutes

Class Size

11 students

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Curriculum Alignment: Alberta Science Curriculum (2023)

Topic: Earth Systems (Grade 4)
Specific Learning Outcomes:

• Knowledge: Describe changes in one Earth system that impact another, including changes in:
  • Number of organisms
  • Food sources
  • Habitat
  • Water distribution and cleanliness
  • Weather patterns
• Understanding: Recognize that Earth’s systems (atmosphere, hydrosphere, biosphere, and lithosphere) are interconnected and small changes can have wide-reaching impacts.
• Skills and Procedures: Explain how changes in one system can affect other systems using observations and evidence.

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Learning Objectives

By the end of the lesson, students will be able to:

1. Identify and describe examples of changes in Earth systems and how these changes affect other systems.
2. Collaborate to design an informational poster illustrating the interconnections between Earth’s systems.
3. Explain using clear reasoning how a specific change (e.g., pollution, drought, habitat loss) impacts multiple Earth systems.

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Materials Needed

• Large poster boards (one per student or pairs)
• Colour markers, crayons, coloured pencils
• Printed Earth systems icons (atmosphere, hydrosphere, biosphere, lithosphere)
• Scenario cards describing different changes in Earth’s systems (e.g., drought, oil spill, forest fire, heavy rainfall)
• Sticky notes
• Worksheets for note-taking and reflection
• Access to classroom water source or pictures/videos demonstrating water cleanliness and distribution

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Lesson Outline

1. Introduction / Engage (15 minutes)

• Begin with a brief interactive discussion: “What are Earth’s systems?” Display the terms atmosphere, hydrosphere, biosphere, and lithosphere with simple icons.
• Show short images/scenarios to spark thinking (e.g., photo of a flooded area, wildfire, polluted river).
• Ask students to brainstorm ways these visuals might connect — e.g., “How could a wildfire impact living things or the air?” Record student ideas on a whiteboard.
• Explicitly state: Today, we will explore how a small change in one part of Earth can affect the others!

Curriculum Connection: This engages Outcome K&U, focusing on making connections between changes in systems.

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2. Exploration / Hands-On Project (50 minutes)

Activity: Create an Interconnected Earth Systems Poster

1. Grouping: Students work individually or in pairs (to accommodate the class size of 11).

2. Scenario Cards: Each group draws a scenario card describing a particular change (e.g., water pollution in a lake, severe drought, invasive species reducing native animals).

3. Research & Brainstorm (15 minutes): Using classroom resources (books, printed materials, teacher explanations), they discuss and write down:

   • What system(s) changes in their scenario?
   • What other Earth systems might be impacted?
   • What happens to organisms, water, habitats, or weather patterns because of this change?

4. Poster Creation (30 minutes):

   • Students design a poster that visually maps the chain reaction of their scenario’s changes across Earth’s interconnected systems.
   • They include:
     • The original change (e.g., “oil spill in lake”)
     • Illustrations for each impacted system
     • Short explanatory sentences/labels
     • Arrows to connect systems and show the flow of impact
   • Encourage creativity — use colours, diagrams, and symbolic icons.

Teacher Role: Circulate and guide discussions; prompt students if they miss a system or a subtle impact.

Curriculum Connection: Covers Skills & Procedures to explain systemic impacts and Knowledge of changes in organism number, water distribution, etc.

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3. Sharing & Reflecting (20 minutes)

• Each student/group briefly presents their poster to the class, explaining the chain of changes and connections between systems.
• Classmates give one positive comment and one question to deepen understanding.
• Use sticky notes for peers to write feedback/questions and put on posters after presentations.
• End with a whole-class reflection:
  “Why do you think it’s important to understand that Earth’s systems are connected?”
  “How can knowing this help people take better care of our planet?”

Assessment: Teacher listens for use of correct terminology and logical connections between systems during presentations.

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4. Consolidation / Exit Ticket (5 minutes)

• Distribute a short worksheet with a new scenario (different from those used) asking, “What changes might happen in different Earth systems?”
• Students write or draw a brief answer, demonstrating their understanding of interconnected impacts.

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Assessment Criteria:

Criteria	Exemplary (4)	Proficient (3)	Emerging (2)	Needs Improvement (1)
Identification of systems	Clearly identifies multiple systems affected	Identifies most relevant systems	Identifies some systems with errors	Struggles to identify systems accurately
Explanation of impacts	Thorough, clear cause-effect explanation	Good explanation with minor gaps	Basic explanation of some impacts	Explanation missing or unclear
Poster creativity & clarity	Visually engaging, well-organized, easy to follow	Clear visuals and organization	Visuals present but unclear	Disorganized or incomplete visuals
Use of vocabulary	Correct and confident use of Alberta curriculum terms (hydrosphere, biosphere, etc.)	Mostly correct use of terms	Some terms used incorrectly	Little or no use of relevant terms

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Extensions / Differentiation Options

• For ELL or emerging learners: Provide sentence starters or graphic organizers to scaffold poster planning.
• For advanced learners: Challenge students to predict a “ripple effect” further into the future or include human impacts on Earth systems.
• Home Connection: Encourage students to survey their neighbourhood for visible Earth system changes (e.g., pollution, new plants) and share next lesson.

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Teacher Reflection Prompts

• Did students demonstrate a clear understanding of how Earth’s systems are interconnected?
• Were students able to apply knowledge creatively in their posters?
• How did collaborative work support or hinder understanding?
• What supports could improve comprehension of the cause-effect relationships?

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This lesson plan ensures hands-on, inquiry-driven learning fully aligned with the Alberta Grade 4 Earth Systems learning outcomes, making abstract environmental concepts tangible through creative and social engagement.